C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/622, 400/657
C08F 210/08 (2006.01) C08F 210/06 (2006.01) C08L 23/02 (2006.01)
Patent
CA 2026896
Copolymers of butene-1 and propylene, having specific physical properties and substantially a syndiotactic structure; and easily heat-sealable polypropylene resin compositions comprising 5-50 parts by weight of one of the copolymers and 95-50 parts by weight of a stereoregular crystalline propylene- ethylene copolymer or propylene-ethylene-C4-12-.alpha.-olefin copolymer having specific compositions and melt flow index.
Asanuma Tadashi
Iwatani Tutomu
Kitabayashi Kouji
Sasaki Tateyo
Shiomura Tetsunosuke
Fetherstonhaugh & Co.
Mitsui Chemicals Inc.
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